You can use older years rotors with them without issue. I have a 2nd set of 08 wheels and rotors and have not had issue on my 09.

I highly recommend the Brembo RCS MC with the adjustment turned to the 'red' facing up. Also Markbuilt put in new pads for me about a month ago. Not sure what they are (will find out) but like them much better than the Carbon Lorriane Racing ones. More progressive feel, better for trail braking.

Can I simply (yea right, simply) install R6 Calipers on my 09+ Daytona with some spacers without changing my lines or master cylinder?
If so can someone point me in the right direction to the source for the spacers.
(I can't mod a potato head, more less anything with wheels)

I think that was the cheapest option. The brake lines are from Spiegler you can call them. Defiantly buy new banjo bolts for the calipers and the master cylinder. Don't take any chances reusing the existing parts. I bought all new personally.

You can use an R6 reservoir. You can use an R6 master. You might be able to use R6 lines but the OEM ones are rubber and inferior to the Daytona's stock steel lines. You can use R6 pads with R6 calipers.